An object moves in a straight line along x-axis, its distance from the origin is given by x = 10t2 m. The average velocity in the time interval from t1 = 2 s to t2 = 3 s is

Question

An object moves in a straight line along x-axis, its distance from the origin is given by x = 10t2 m. The average velocity in the time interval from t1 = 2 s to t2 = 3 s is (A) 50 m s-1 (B) 25 m s-1 (C) 20 m s-1 (D) 5 m s-1

Tardigrade Admin · Accepted Answer

x=10 t2 average velocity =(x(t 2)-x(t 1)/t 2-t 1) av.vel. =(90-40/3-2) =50 m sec -1

Q. An object moves in a straight line along $x$ -axis, its distance from the origin is given by $x = 10 t^{2} m$ . The average velocity in the time interval from $t_{1} = 2 s$ to $t_{2} = 3 s$ is

$50 m s^{- 1}$

$25 m s^{- 1}$

$20 m s^{- 1}$

$5 m s^{- 1}$

$x = 10 t^{2}$
average velocity $= \frac{x ( t 2 ) - x ( t 1 )}{t 2 - t 1}$
av.vel. $= \frac{90 - 40}{3 - 2}$
$= 50 m se c^{- 1}$

Q. An object moves in a straight line along x-axis, its distance from the origin is given by x=10t2m. The average velocity in the time interval from t1​=2s to t2​=3s is

50ms−1

25ms−1

20ms−1

5ms−1